So..... into the vtd transmission.
The transmission itself is the same as the US part. All of the differences are in the extension housing. The exception to this is the Japanese seem to put more loving care into the assembly of their own stuff than they do ours. There are paint marks from gear matching and hand assembly checks all over this thing.
Here's a picture of the vtd extension housing.
http://www.ecutune.com/posts/jdm/DSC_9012.JPG
open it up and you find the vtd:
http://www.ecutune.com/posts/jdm/DSC_9015.JPG
pull it out and you have a 4eat just like any us model
http://www.ecutune.com/posts/jdm/DSC_9037.JPG
skipping forward to when i put it back together and we have a vtd again
http://www.ecutune.com/posts/jdm/DSC_9039.JPG
transfer clutch frictions going back in
http://www.ecutune.com/posts/jdm/DSC_9046.JPG
output shaft put on
http://www.ecutune.com/posts/jdm/DSC_9051.JPG
rebuilt jdm transmission closed back
http://www.ecutune.com/posts/jdm/DSC_9060.JPG